Music-chart



(No Model.)

M. KNAPP.

Music Chart.

. No. 236,896. Patented Jan. 25, I881.

Imfeninr:

PLFS'ERS, FHOTD-LITHOGRAPHER, WASHINGTON. I104 UNITED STATES PATENT Fries.

MINNA KNAPP, OF SAN FRANCISCO, CALIFORNIA.

MUSIC-CHART.

SPECIFICATION forming part of Letters Patent No. 236,896, dated January 25, 1881.

Application filed November 5, 1880.

To all whom it may concern:

Be it known that I, MINNA KNAPP, of the city and county of San Francisco, in the State of California, have originated and invented a new and useful ImprovementinMusic-Oharts; and I do hereby declare that thefollowing description fully and clearly sets forth and explains my said invention, reference being bad to the accompanying drawing.

The present invention has relation to certain new and useful improvements in musiccharts; and the object thereof is to providea chart or diagram of the above character having the signatures and symbols of the twelve major concords or keys in music and the relative minor keys arranged around the outer edge of the dial of a clock having its twelve divisions in such manner that the memory of the pupil associates and refers to the numerals of the dial the positions and relation of the severalkeys and signatures, and so readily determines what number of sharps or flats are employed for any key, and what is the relative minor of such cord. These objects I attain by the chart or diagram constructed as shown in the drawing and hereinafter described.

The accompanying drawing clearly illustrates this improvement.

This chart or diagram is made of any suitable size. In producing it I arrange in the form of a clock face or dial, A, of any convenient size, the numerals marking the twelve divisions or hours and the tive regular spaces or intervals between each and every one. I then provide outside of this dial a circular space, B, within which I place, at regular intervals apart, the signatures and symbol-letters of the twelve major keys, beginning at the meridian or twelve oclock, where 1 place the signature of G, or the natural key. The association of these two characters is then zero, or meridian, and the natural key without sharps or flats. At the next position, or one oclock on the dial, five intervals forward, I place the signature of the next key, which is G, one sharp and five musical intervals above the last signature. One oclock on the dial is then associated with the key of one sharp, and its position on the chart recalls to the (No model.)

mind the symbol-letter of the key. At the next point, tive intervals forward on the dial,

marked by the numeral two, the next signature of two sharps is placed, and so onin regular succession, the keys being indicated at each point on the dial, and the positions of the sharps shown on the clef of each key, until the key of six sharps and its equivalent of six flats is reached at the numeral 6 on the dial. From this point the intervals are associated with the signatures containing flats, and the several keys are indicated in line with the numerals up to the beginning or the natural key. At each and every key thus indicated I place the corresponding symbol-letter, as G, G, D, &c.

Outside of the circle B, containing the major keys, I provide a circle or space, 0, on which I place at each point in line with its appropriate key or signature the symbol-letters, as a c b, that indicate the relative minor keys.

As thus arranged this chart or diagram presents, in compact and attractive form,the suc cession and relation of the several major and relative minor keys, so that the pupil is greatly assisted in committin g to memory the signatures and symbols of the various keys.

It will be observed that within the space around the outside of the dial the staff used to indicate the relative position of the notes in the scale is placed on a line with each of the twelve divisions or hours, which are included among the signatures and symbol-letters here- .inbefore referred to, each section of the staff having thereon the clef character and its sharps or flats.

The above features, in connection with the other arrangements of characters around the outer edge of the dial-plate, are wanting on the music-charts heretofore in use, and the addition of the illustration of the staff with its clef and the sharps or flats is deemed of great importance, from the fact that the twelve major concords or keys and the relative minor keys are more readily and quickly distinguished thereby, greatly facilitating the study of music by the pupil.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

A music chart or diagram provided upon its face with a dial having the usual numerals to designate the twelve hours, and circular spaces around the outside of said dial, which contain twelve corresponding sections of the musical staff, with the clef-character and the signatures and symbol-letters of the twelve relative major and minor keys, the whole being arranged as set forth and with relation to the numerals 0f the clock-dial, for the purpose specified.

Witness my hand.

MINN A KNAPP.

Witnesses:

EDWARD E. OsBORN, ANDREW J. COFFEE. 

